Home / 3,117.75-4,302.62-1,791.87

Finding the Fourth Proportional to 3,117.75, 4,302.62 and 1,791.87

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Solution

The fourth proportional to 3,117.75, 4,302.62 and 1,791.87 is: 2,472.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.75 : 4,302.62 = 1,791.87 : x
  2. Step 2: Convert to fraction form
    3,117.75/4,302.62 = 1,791.87/x
  3. Step 3: Cross multiply
    3,117.75x = 4,302.62 × 1,791.87
  4. Step 4: Simplify right side
    3,117.75x = 7,709,735.70
  5. Step 5: Solve for x
    x = 7,709,735.70/3,117.75
  6. Step 6: Final answer
    x = 2,472.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.